This patch updates HRT driver for supporting PM. The resume function of PWM4 timer which is used clocksource is needed when kernel is resuming for restarting.
Signed-off-by: Jaecheol Lee <[email protected]> --- arch/arm/mach-exynos4/time.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-exynos4/time.c b/arch/arm/mach-exynos4/time.c index e30ac70..86b9fa0 100644 --- a/arch/arm/mach-exynos4/time.c +++ b/arch/arm/mach-exynos4/time.c @@ -206,12 +206,28 @@ static cycle_t exynos4_pwm4_read(struct clocksource *cs) return (cycle_t) ~__raw_readl(S3C_TIMERREG(0x40)); } +static void exynos4_pwm4_resume(struct clocksource *cs) +{ + unsigned long pclk; + + pclk = clk_get_rate(timerclk); + + clk_set_rate(tdiv4, pclk / 2); + clk_set_parent(tin4, tdiv4); + + exynos4_pwm_init(4, ~0); + exynos4_pwm_start(4, 1); +} + struct clocksource pwm_clocksource = { .name = "pwm_timer4", .rating = 250, .read = exynos4_pwm4_read, .mask = CLOCKSOURCE_MASK(32), .flags = CLOCK_SOURCE_IS_CONTINUOUS , +#ifdef CONFIG_PM + .resume = exynos4_pwm4_resume, +#endif }; static void __init exynos4_clocksource_init(void) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
